Rivet set



Nov. 10; 1942. E B, LEAR 2,301,888

RIVET SET Filed Sept. 26, 1939 INVENTO [AIL 8 L 1? BY 9 CG IL ATTORNEY Patented Nov. 10,1942 a n UNITED STATES PATENT OFFICE RIVET snr Earl B. Lear, Garfield Heights, Ohio, aslig'nor to The Cleveland Pneumatic Tool Company, Cleveland, Ohio, a corporation of Ohio Application September 2c, 1939, Serial No. access 5 Claims. .(Cl. 7843.5)

This invention relates 'broadlyto riveting hamannular shoulder 22. The head 20 is secured mers, but more particularly to improvements'in within the socket It by a sleeve 23 eng ging th rivet sets. shanks shoulder l1 and the head's shoulder 22,

OI'ie object of this invention isto produce an which sleeve is preferably made of resilient mawith the rivet irrespective of the misalignment over the shank member H and is of a length of the riveting hammer relative to the center alcu t d t ex nd l g y e w h d suraxis or the rivet, thereby facilitating the use of ce 24 o the he d which surface s p e rivetins hammers and overcoming the danger of lv l ht y onv x n min e y upsetting the rivet eccentrically relative to its r d nn l dge 5- The hei ht of the center axis. l

Another object of this invention is to produce than e depth 0! the Socket l, thereby causing an improved rivet set wherein the rivet's contacte h l 11 to m n l u n y Sp ing face is capable of limited swiveling motion 15 fr m the end of the shank member, while the relative to the rivet set. p

Another object f thi invention i t pr du between the shoulders I! and 22 to maintain the a rivet et slippage oi th rivet gel; fr m t rivet during enabling limited swivelling motion of the head the riveting operation.

Another object of this invention is to produce In the modification wn n i the head m improvedflt'vet set forming a compact; 35 11 I20 is similar to the head 20 in Fig. 1, but is bly which is strong. durable and emcient. p ovided with a depending tapered outer end 26 In th drawi having its outer end surface I24 concaved or cup Fig, 1 i a l it inal elevgtional e partly shaped as at 21 "to receive the rounded head of in s'ection'of the improved rivet set mounted arivefiwithin the front end of a riveting hammer. In the modification sh n in la- 4, the shank Pi 2 i an enlarged n of t m end of member 2 is also formed with an enlargement th rivet et shown in 111 2| terminated by a semispherical head 2; on In 3 r re t; t -1 m end of rivet set which is swivelly mounted a socket 220 held on embndym a modification of th invention the shank III by a sleeve 22! similar to the sleeve 4 lg vi gi u t mg 3 Illustrating 23 in Fig. 1. The outer end suriace 224 of the oth modification of t myenfldn socket 220 is also slightly convexed and bordered m. 5 illustrates a bucking bar embodying the by 8 rounded n l d 225 This construcmv u tion is exactly the reverse of that shown in Fig. 1 Fig. 6 is another modification oi the invention. and 18 capable of Performing the same functions. Referring to the drawing, in represents the In t e mmiflcation Shown 8- t e swivrivet set assembly including a shank member I I 6111118 head s mo n ed wi hin a semlspherical formed with a reduced poi-tion I1 of a, coniren- 4 socket in formed in the end 01 a bucking bar 28,

4 pacts of a reciprocatory piston It. Intermediate In the modification shown in Fig. 6, the shank the ends of the shank member ii, there is promember i8 8180 P vi wi n e l raed vided a collar I! limiting the penetration of the end portion "6 which has its outer reduced portion l2 into th in Fig. 1 except that the resilient sleeve 2: has

' been replaced by a tension spring 423.

In the operation, it will be understood that the improved rivet set may be used to produce either the usual flush type of rivet heads, or the regular crowned type of heads. When producing the fiush head type, the work or sheets to be riveted together are first dimpled to accommodate the head of the rivet. After the insertion of the rivet in the work, the rivet set is applied on the work or more specifically on the head of the rivet, while a bucking bar is held against the shank of the rivet extending from the other side of the work. When applying the improved rivet set to the work, the sleeve 23 which extends slightly below the end of the rivet head 20 will first engage the work to normally maintain the rivet engaging face 24, of the head 20 slightly away from the rivet head. Upon pressure exerted on the riveting hammer, the front end of the sleeve will be compressed or distorted sufllciently to enable contact of the head 20 with the rivet. In this instance, the rivet contacting face 24 ofthe .rivet head 23 being slightly concaved will tend to make the central portion of the rivet head while remaining in spaced relation with the work. Due to the swivel connection between the head 33 and the shank member II, it is possible for the operator to maintain the end faceil of the i head 28 substantially parallel with the work even between the flexible sleeve and the work to maintain the rivet set, or more particularly the head 20 thereof, in operative engagement against lateral-slipp ge.

With reference to the modification shown in Fig. 3, it will be understood that due to the swivel connectionv between the shank member ill and the head I23, it will also be possible to drive or maintain the.-head axially with the rivet well enabling limited lateral movement or misalignment of the shank Ill.

, Obviously in the modification shown in Fig. 4, the operation resulting in the flush head type of rivets, will be identical to that above described in connection with the construction shown in Flgs.1-and2. 7

When using a bucking bar as shown in Fig. 5, it will be understood that due to the swivel joint between the head 320 and the bar 28, it will also be possible for the operator to maintain the head 320 in axial operative engagement with the rivet, while enabling limited lateral movement or misalignment of the bar 28. In the event the bar is used for bucking the head of the flush rivet of said member, a ball and socket joint between shown in Fig. 1, the sleeve 333 engaging the work or plate intended to be riveted, wfll also prevent accidental slippage of the bar relative to the work.

In the modification shown in Fig, 6, the riveting operation may take place as explained in connection with the construction shown in Figs. 1 and 2. However, while the spring 423 enables limited swivelling movement of the head no relative to the shank member I, it will be understood that in this last modification the spring is not capable of frictional engagement with the work for preventing accidental slippage. of the rivet set from the work.

Although the foregoing description is necessarily of a detailed character, in order to completely set forth the invention, it is to be understood that the specific terminology is not intended to be restrictive or confining and it is to be further understood that various rearrangements of parts and modifications of structural detail may be resorted to without departing from the scope or spirit of the invention as herein claimed.

I claim:

1. A rivet set including an elongated shank member formed with an enlarged end, a rivet engaging head extending axially from said end, a ball and socket Joint between said end and head, and a retaining flexible sleeve operatively engaging said end and head, said sleeve surrounding said end. and the portion of said head extending therefrom for limiting swivel movement of said head relative to said shank.

2.;A rivet set including a shank member, a rivet engaging head mounted on one end of said member, and a retaining sleeve carried by said member'operatively. engaging said head, said sleeve being made of nonmetallic resilient material and extending slightly beyond the free end of said head.

3. A rivet set including a shank member, a rivet engaging head mounted axially on one end said one end and head, and a resilient sleeve gripping .said shank and head and slightly stretched therebetween for assuring contact of said head with the one end of said shank.

4. A rivet set including a shank member, a rivet engaging head swivelly mounted on one end of said member, and a retaining rubber sleeve carried by said member operatively engaging said head, said sleeve extending beyond said head for frictional engagement with the work to be riveted during normal operative engagement of said head with the rivet.

5. A rivet set including a shank member, a rivet engaging head, swivelly mounted on one end of said member, and. nonmetailic flexible retaining means carried by said member operatively engaging said head, said means extending beyond said head for frictional engagement with the work to be riveted during normal operative engagement of said head with the rivet.

EARL B. LEAR. 

